Electric heating method, device, computer equipment and medium for automobile catalyst

Abstract

The present application provides a method, apparatus, computer equipment, and medium for electrically heating an automobile catalyst. The method comprises: estimating the time required for electrically heating the automobile catalyst and the time until the engine is started according to a preset time interval; determining whether the time until the engine is started is less than the time required for electrically heating the automobile catalyst; and starting to electrically heat the automobile catalyst if the time until the engine is started is less than the time required for electrically heating the catalyst. The electric heating method described in the present application solves the problem that conventional electrically heated automobile catalysts cause a long delay in engine starting, thereby improving the engine starting efficiency and saving fuel consumption.

Description

Technical Field

[0001] The present application relates to the technical field of automobile catalyst heating, and more specifically, to an electric heating method, device, computer equipment, and medium for automobile catalyst heating. Background Art

[0002] A three-way catalytic converter (C / C) accelerates the redox reactions of hydrocarbons, nitrogen oxides, and carbon monoxide in exhaust gases, converting them into carbon dioxide, nitrogen, and water, thereby reducing emissions. However, C / C converters only operate effectively above a certain temperature. When starting a cold engine, the catalyst must first be ignited, heating the catalyst with the heat from the fuel combustion. During this ignition process, engine speed and load are restricted, impacting both driving and efficiency.

[0003] At present, in addition to the traditional catalyst ignition heating method, the catalyst can also be heated by electric heating. However, the current electric heating method is to put the engine in standby mode when starting the engine, first heat the catalyst, and then start the engine after the catalyst is heated to a certain temperature. Compared with the traditional catalyst ignition process, this electric heating method reduces emissions and fuel consumption. However, using this electric heating method to heat the catalyst will still take some time to heat the catalyst to a certain temperature, which will cause the engine start time to be delayed for a period of time. Summary of the Invention

[0004] In view of this, the embodiments of the present application provide a method, device, computer equipment and medium for electrically heating an automobile catalyst, which can solve the problem that traditional electrically heated automobile catalysts cause a long delay time in engine starting, improve the engine starting efficiency, and save fuel consumption.

[0005] In a first aspect, an embodiment of the present application provides a method for electrically heating an automotive catalyst, comprising the following steps:

[0006] Estimate the time required for electric heating of the car's catalytic converter and the time until the engine starts according to the preset time interval;

[0007] Determining whether the time from the engine start to the engine start is less than the time required for electric heating of the automobile catalytic converter;

[0008] If the time from the engine start-up is less than the time required for the catalyst to be electrically heated, the electric heating of the automobile catalyst is started.

[0009] In one possible implementation, estimating the time required for electrical heating of the automobile catalyst according to a preset time interval includes:

[0010] Obtain the current vehicle catalyst temperature and ambient temperature according to preset time intervals;

[0011] The time required for electrical heating of the automobile catalyst is estimated according to the current automobile catalyst temperature, the ambient temperature and the target temperature.

[0012] In a possible implementation, estimating the time required for electrical heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature, and the target temperature includes:

[0013] Searching for the time corresponding to the current vehicle catalyst temperature, ambient temperature, and target temperature through a preset mapping table;

[0014] The found time is determined as the time required for electrical heating of the catalyst.

[0015] In a possible implementation, estimating the time required for electrical heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature, and the target temperature includes:

[0016] Determining an input feature vector based on the current automobile catalyst temperature, the ambient temperature, the target temperature, a heating rate of the automobile catalyst, and a heat dissipation rate of the automobile catalyst;

[0017] The input feature vector is input into a vehicle catalyst heating time prediction model to estimate the time required for the vehicle catalyst to be electrically heated.

[0018] In one possible implementation, estimating the time until engine start according to a preset time interval includes:

[0019] Obtain the current vehicle battery remaining capacity SOC and power battery discharge average power according to the preset time interval;

[0020] The time until the engine starts is estimated based on the current remaining capacity SOC of the vehicle battery and the average discharge power of the power battery.

[0021] In one possible implementation, estimating the time until the engine starts based on the current remaining capacity SOC of the vehicle battery and the average discharge power of the power battery includes:

[0022] Calculating the difference between the current remaining capacity SOC of the vehicle battery and the SOC critical value to obtain the SOC from the start time;

[0023] The time until the engine starts is estimated by calculating the product of the SOC and the battery pack energy at the start time and dividing it by the average discharge power of the power battery.

[0024] In a second aspect, an embodiment of the present application provides an electric heating device for an automobile catalyst, comprising:

[0025] A calculation module, for estimating the time required for electric heating of the automobile catalyst and the time until the engine starts according to a preset time interval;

[0026] A comparison module, configured to determine whether the time from the engine start to the engine start is less than the time required for the electric heating of the automobile catalyst;

[0027] The processing module is configured to start electrically heating the automobile catalyst if the time from the engine starting is less than the time required for electrically heating the catalyst.

[0028] In a possible implementation, the calculation module includes:

[0029] The first acquisition unit is used to acquire the current automobile catalyst temperature and ambient temperature according to a preset time interval;

[0030] The first calculation unit is used to estimate the time required for electrical heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature and the target temperature.

[0031] In a third aspect, an embodiment of the present application provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method for electrically heating an automobile catalyst as described in any one of the first aspects are implemented.

[0032] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method for electrically heating a vehicle catalyst as described in any one of the first aspects are executed.

[0033] The electric heating method for an automobile catalyst provided in an embodiment of the present application first estimates the time required for electric heating of the automobile catalyst and the time until the engine is started according to preset time intervals; secondly, determines whether the time until the engine is started is less than the time required for electric heating of the automobile catalyst; finally, if the time until the engine is started is less than the time required for electric heating of the catalyst, then starts electric heating of the automobile catalyst.

[0034] The technical solution provided in the embodiments of the present application has the following beneficial effects:

[0035] In order to determine the start time of electrically heating the automotive catalyst, it is first necessary to estimate the time required for electrically heating the automotive catalyst and the time until the engine is started at regular intervals, that is, according to preset time intervals. In order to avoid the problem of delayed engine start timing caused by electrically heating the automotive catalyst, after obtaining the estimated time required for electrically heating the automotive catalyst and the time until the engine is started, it is necessary to determine whether the time until the engine is started is less than the time required for electrically heating the automotive catalyst. If the time until the engine is started is less than the time required for electrically heating the catalyst, electrically heating the automotive catalyst is started. The automotive catalyst electrically heating method described in the present application immediately starts the automotive catalyst electrically when it is determined that the time until the engine is started is less than the time required for electrically heating the automotive catalyst, so that the automotive catalyst electrically heated has been preheated in advance by the time the engine is started, and there is no need to temporarily preheat it when the engine is started. This solves the problem that traditional electrically heated automotive catalysts cause a long delay in engine start, improves the engine starting efficiency, and saves fuel consumption.

[0036] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 A schematic flow chart of a method for electrically heating an automotive catalyst provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of a process for estimating the electric heating time of an automobile catalyst provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of a process for estimating the time until engine start provided in an embodiment of the present application;

[0041] Figure 4 A schematic structural diagram of an electric heating device for an automotive catalyst provided in an embodiment of the present application;

[0042] Figure 5 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0044] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0045] In the prior art, when starting the engine, the following problems may occur:

[0046] Since automotive catalysts can only work effectively above a certain temperature, when the engine is started from a cold engine, the catalyst needs to be ignited first, and the heat from the fuel combustion is used to heat the catalyst. During the catalyst ignition process, the engine speed and load are limited, which affects both driving and efficiency. At present, in addition to the traditional catalyst ignition heating method, the catalyst can also be heated by electric heating. However, the current electric heating method is to put the engine in standby mode when starting the engine, first heat the catalyst, and then start the engine after the catalyst is heated to a certain temperature. Compared with the traditional catalyst ignition process, this electric heating method reduces emissions and fuel consumption, but using this electric heating method to heat the catalyst still takes some time to heat the catalyst to a certain temperature, which will cause a delay in the engine start time.

[0047] Based on the above-mentioned defects, the embodiment of the present application provides an electric heating method for an automobile catalyst, such as Figure 1 As shown, the following steps are included:

[0048] S101, estimating the time required for electric heating of the vehicle catalyst and the time until the engine starts according to a preset time interval;

[0049] S102, determining whether the time from the engine start to the engine start is less than the time required for electrical heating of the automobile catalyst;

[0050] S103: If the time from the engine start to the engine start is less than the time required for the catalyst to be electrically heated, then start electrically heating the catalyst of the vehicle.

[0051] In the above-mentioned method for electrically heating a catalyst for an automobile, in order to determine the start time of electrically heating the catalyst for an automobile, it is first necessary to estimate the time required for electrically heating the catalyst for an automobile and the time until the engine is started at regular intervals, that is, according to preset time intervals. In order to avoid the problem of delayed engine start timing caused by electrically heating the catalyst for an automobile, after obtaining the estimated time required for electrically heating the catalyst for an automobile and the time until the engine is started, it is necessary to determine whether the time until the engine is started is less than the time required for electrically heating the catalyst for an automobile. If the time until the engine is started is less than the time required for electrically heating the catalyst, electrically heating the catalyst for an automobile is started. The method for electrically heating a catalyst for an automobile described in the present application immediately starts the electrically heated catalyst for an automobile when it is determined that the time until the engine is started is less than the time required for electrically heating the catalyst for an automobile, so that the electrically heated catalyst for an automobile is preheated in advance by the time the engine is started, and no temporary preheating is required when the engine is started. This solves the problem of traditional electrically heated catalysts for automobiles causing a long delay in engine start-up, improves engine starting efficiency, and saves fuel consumption.

[0052] The above exemplary steps of the embodiment of the present application are described below respectively.

[0053] In step S101, the time required for electric heating of the automobile catalyst and the time until the engine is started are estimated according to a preset time interval;

[0054] In some embodiments, the preset time interval may be a value between 10 ms and 100 ms. It can be understood that the time required for electrical heating of the automobile catalyst and the time until the engine is started are estimated in real time.

[0055] In the above method, the preset time interval is set to be very small, that is, the time required for electric heating of the automobile catalyst and the time from engine start can be obtained in real time, so that when comparing the two values, the moment when the time from engine start is less than the time required for electric heating of the automobile catalyst can be obtained in time, which is convenient for timely starting the electrically heated automobile catalyst.

[0056] In step S102, it is determined whether the time from the engine start is less than the time required for the electric heating of the automobile catalyst;

[0057] Specifically, after each estimation of the time until the engine starts and the time required for the electric heating of the automobile catalyst, the time values ​​of the two are compared. As time goes by, the value of the time until the engine starts becomes smaller and smaller. Until it is determined that the time until the engine starts is less than the time required for the electric heating of the automobile catalyst, the subsequent step is executed, that is, starting to electrically heat the automobile catalyst.

[0058] In step S103, if the time from the engine start to the engine start is less than the time required for the catalyst to be electrically heated, then the catalyst is electrically heated.

[0059] Specifically, when it is estimated that the time until the engine starts is less than the time required for the catalyst to be electrically heated, the catalyst is immediately electrically heated, so that when the engine starts, the catalyst is almost fully preheated.

[0060] In the above-mentioned method, since the method described in this application adopts an estimation method, there may be estimation errors. In one case, when the engine is started, the automobile catalyst may have been preheated in advance. In this case, when the engine is started, the automobile catalyst does not need to be temporarily preheated again, which solves the problem that the traditional electric heating automobile catalyst will cause engine start-up delay, improves the engine start-up efficiency, and saves fuel consumption; in another case, when the engine is started, the automobile catalyst may not have been preheated yet. At this time, it only needs to continue preheating until the preheating is completed, effectively shortening the preheating time of the automobile catalyst after the engine is started, solving the problem that the traditional electric heating automobile catalyst causes a long delay in engine start-up time, thereby improving the engine start-up efficiency and saving fuel consumption.

[0061] In the above-mentioned method for electrically heating a catalyst for an automobile, in order to determine the start time of electrically heating the catalyst for an automobile, it is first necessary to estimate the time required for electrically heating the catalyst for an automobile and the time until the engine is started at regular intervals, that is, according to preset time intervals. In order to avoid the problem of delayed engine start timing caused by electrically heating the catalyst for an automobile, after obtaining the estimated time required for electrically heating the catalyst for an automobile and the time until the engine is started, it is necessary to determine whether the time until the engine is started is less than the time required for electrically heating the catalyst for an automobile. If the time until the engine is started is less than the time required for electrically heating the catalyst, electrically heating the catalyst for an automobile is started. The method for electrically heating a catalyst for an automobile described in the present application immediately starts the electrically heated catalyst for an automobile when it is determined that the time until the engine is started is less than the time required for electrically heating the catalyst for an automobile, so that the electrically heated catalyst for an automobile is preheated in advance by the time the engine is started, and no temporary preheating is required when the engine is started. This solves the problem of traditional electrically heated catalysts for automobiles causing a long delay in engine start-up, improves engine starting efficiency, and saves fuel consumption.

[0062] In some embodiments, in order to estimate the time required for electric heating of the automobile catalyst, the following process needs to be performed, specifically, Figure 2 As shown, step S101 includes the following steps:

[0063] S201, obtaining the current vehicle catalyst temperature and ambient temperature according to a preset time interval;

[0064] In some embodiments, when the preset time interval is set to 10ms, the current vehicle catalyst temperature and the current ambient temperature are obtained every 10ms. In addition, the vehicle catalyst temperature and the ambient temperature are both provided with corresponding temperature measuring instruments, and the values ​​of the two temperature measuring instruments can be directly obtained.

[0065] S202, estimating the time required for electrical heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature, and the target temperature;

[0066] In some embodiments, the target temperature is the maximum temperature to which the automobile catalyst needs to be heated.

[0067] In order to estimate the time required for electric heating of the automobile catalyst based on the above parameters, some processing is required. Specifically, in one embodiment, estimating the time required for electric heating of the automobile catalyst based on the current automobile catalyst temperature, the ambient temperature, and the target temperature includes the following steps:

[0068] Searching for the time corresponding to the current vehicle catalyst temperature, ambient temperature, and target temperature through a preset mapping table;

[0069] The found time is determined as the time required for electrical heating of the catalyst.

[0070] In some embodiments, the preset mapping table can be an empirical table, which is set according to the experience of relevant personnel or according to historical statistical data. Each set of data is provided with the current automobile catalyst temperature, ambient temperature and target temperature, as well as the time required for electric heating of the automobile catalyst corresponding to these three temperatures. For example, if the current automobile catalyst temperature is 100°C, the ambient temperature is 30°C, and the target temperature is 200°C, the corresponding time required for electric heating of the automobile catalyst is found according to this set of data; in addition, when traversing each set of data, if there is no corresponding exactly the same set of data, the most similar set of data is selected as the estimated time required for electric heating of the automobile catalyst.

[0071] In addition to the above-mentioned method for estimating the time required for electrical heating of an automobile catalyst, another estimating method is provided. In another embodiment, estimating the time required for electrical heating of an automobile catalyst based on the current automobile catalyst temperature, the ambient temperature, and the target temperature includes the following steps:

[0072] Determining an input feature vector based on the current automobile catalyst temperature, the ambient temperature, the target temperature, a heating rate of the automobile catalyst, and a heat dissipation rate of the automobile catalyst;

[0073] The input feature vector is input into a vehicle catalyst heating time prediction model to estimate the time required for the vehicle catalyst to be electrically heated.

[0074] Specifically, in this embodiment, a catalytic converter heating time prediction model is used to calculate the time required for electric heating of a catalytic converter. Because the model provides higher accuracy, the parameter data used to train the model also incorporates the catalytic converter heating rate and heat dissipation rate. The model training process involves collecting a large amount of historical data, each set of which contains the values ​​of the five aforementioned input feature vectors. Multiple training runs are performed based on this historical data to obtain the catalytic converter heating time prediction model. The training of the prediction model is well established and will not be further elaborated here. The trained catalytic converter heating time prediction model is then used to predict the heating time of the catalytic converter, thereby obtaining an estimate of the time required for electric heating of the catalytic converter.

[0075] In some embodiments, in order to estimate the time until the engine starts, the following process needs to be performed, specifically, Figure 3 As shown, step S101 further includes the following steps:

[0076] S301, obtaining the current remaining battery capacity (SOC) and the average power discharging power of the power battery according to a preset time interval;

[0077] In some embodiments, when the preset time interval is set to 10ms, the current vehicle battery remaining power SOC and the average power of the power battery discharge are obtained every 10ms. Since the battery remaining power SOC and the average power of the power battery discharge change slowly, the current vehicle battery remaining power SOC and the average power of the power battery discharge can also be obtained every few minutes, such as every three minutes.

[0078] S302 , estimating the time until the engine starts according to the current remaining capacity SOC of the vehicle battery and the average discharge power of the power battery.

[0079] In some embodiments, when estimating the time until the engine starts, the time required for electric heating of the vehicle catalyst is consistent with the estimation, and is also estimated every 10ms; if the above-mentioned method of obtaining the current vehicle battery remaining power SOC and the average power discharge power of the power battery every three minutes is adopted, when estimating the time until the engine starts, the time until the engine starts is estimated according to the most recently obtained and recorded current vehicle battery remaining power SOC and the average power discharge power of the power battery.

[0080] In some embodiments, estimating the time until the engine starts based on the current remaining charge SOC of the vehicle battery and the average discharge power of the power battery includes:

[0081] Calculating the difference between the current remaining capacity SOC of the vehicle battery and the SOC critical value to obtain the SOC from the start time;

[0082] Specifically, the SOC critical value is a preset SOC value, that is, a preset remaining power. For example, if the SOC critical value is 10%, it means that the engine will be started when the current remaining power SOC of the vehicle battery reaches 10%; when the current remaining power SOC of the vehicle battery is obtained, it is subtracted from the SOC critical value to obtain the SOC from the start time.

[0083] The time until the engine starts is estimated by calculating the product of the SOC and the battery pack energy from the start time and dividing it by the average power battery discharge power;

[0084] Specifically, the SOC from the start time obtained by the above calculation is a unitless value with a percentage sign. In order to obtain the battery energy value corresponding to the SOC, the SOC from the start time and the battery pack energy are multiplied to obtain the battery energy corresponding to the SOC. Then, the battery energy corresponding to the SOC is divided by the average discharge power of the power battery to obtain the estimated time until the engine starts.

[0085] In summary, the embodiments of the present application have the following beneficial effects:

[0086] In order to determine the start time of electrically heating the automotive catalyst, it is first necessary to estimate the time required for electrically heating the automotive catalyst and the time until the engine is started at regular intervals, that is, according to preset time intervals. In order to avoid the problem of delayed engine start timing caused by electrically heating the automotive catalyst, after obtaining the estimated time required for electrically heating the automotive catalyst and the time until the engine is started, it is necessary to determine whether the time until the engine is started is less than the time required for electrically heating the automotive catalyst. If the time until the engine is started is less than the time required for electrically heating the catalyst, electrically heating the automotive catalyst is started. The automotive catalyst electrically heating method described in the present application immediately starts the automotive catalyst electrically when it is determined that the time until the engine is started is less than the time required for electrically heating the automotive catalyst, so that the automotive catalyst electrically heated has been preheated in advance by the time the engine is started, and there is no need to temporarily preheat it when the engine is started. This solves the problem that traditional electrically heated automotive catalysts cause a long delay in engine start, improves the engine starting efficiency, and saves fuel consumption.

[0087] Based on the same inventive concept, an electric heating device for an automobile catalyst corresponding to the electric heating method for an automobile catalyst in the first embodiment is also provided in the embodiments of the present application. Since the principle of solving the problem by the device in the embodiments of the present application is similar to that of the above-mentioned electric heating method for an automobile catalyst, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0088] like Figure 4 As shown, Figure 4 The following is a schematic diagram of the structure of the electric heating device for an automotive catalyst provided in this application. The electric heating device for an automotive catalyst includes:

[0089] The calculation module 401 is used to estimate the time required for electric heating of the automobile catalyst and the time until the engine starts according to a preset time interval;

[0090] A comparison module 402 is used to estimate the time required for electric heating of the automobile catalyst and the time until the engine is started according to a preset time interval;

[0091] The processing module 403 is configured to start electrically heating the automobile catalyst if the time from the engine start-up is less than the time required for electrically heating the catalyst.

[0092] It should be understood by those skilled in the art that Figure 4 The functions of the modules in the electric heating device for an automobile catalyst can be understood by referring to the description of the electric heating method for an automobile catalyst. Figure 4 The functions of the various units in the electric heating device for the automobile catalyst shown can be implemented by a program running on a processor, or by a specific logic circuit.

[0093] In a possible implementation, the calculation module 401 includes:

[0094] The first acquisition unit is used to acquire the current automobile catalyst temperature and ambient temperature according to a preset time interval;

[0095] The first calculation unit is used to estimate the time required for electrical heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature and the target temperature.

[0096] In a possible implementation, the first computing unit is configured to:

[0097] Searching for the time corresponding to the current vehicle catalyst temperature, ambient temperature, and target temperature through a preset mapping table;

[0098] The found time is determined as the time required for electrical heating of the catalyst.

[0099] In another possible implementation, the first computing unit is configured to:

[0100] Determining an input feature vector based on the current automobile catalyst temperature, the ambient temperature, the target temperature, a heating rate of the automobile catalyst, and a heat dissipation rate of the automobile catalyst;

[0101] The input feature vector is input into a vehicle catalyst heating time prediction model to estimate the time required for the vehicle catalyst to be electrically heated.

[0102] In a possible implementation, the calculation module 401 further includes:

[0103] The second acquisition unit is used to obtain the current remaining capacity SOC of the vehicle battery and the average discharge power of the power battery according to a preset time interval;

[0104] The second calculation unit is used to estimate the time until the engine starts according to the current remaining power SOC of the vehicle battery and the average discharge power of the power battery.

[0105] In a possible implementation, the second computing unit is configured to:

[0106] Calculating the difference between the current remaining capacity SOC of the vehicle battery and the SOC critical value to obtain the SOC from the start time;

[0107] The time until the engine starts is estimated by calculating the product of the SOC and the battery pack energy at the start time and dividing it by the average discharge power of the power battery.

[0108] To determine the start time of electrically heating the catalyst, the electric heating device for the automotive catalyst described above first estimates the time required for electrically heating the catalyst and the time until engine start at predetermined time intervals, using a calculation module 401. To avoid delays in engine start timing caused by electrically heating the catalyst, after obtaining the estimated time required for electrically heating the catalyst and the time until engine start, a comparison module 402 determines whether the time until engine start is less than the time required for electrically heating the catalyst. If the time until engine start is less than the time required for electrically heating the catalyst, processing module 403 initiates electrically heating the catalyst. The method for using the electric heating device for the automotive catalyst described in this application immediately activates the electrically heated catalyst upon determining that the time until engine start is less than the time required for electrically heating the catalyst. This ensures that the electrically heated catalyst has already been preheated by the time the engine starts, eliminating the need for temporary preheating at engine start. This solves the problem of conventional electrically heated catalysts causing significant engine start delays, improves engine start efficiency, and saves fuel.

[0109] Corresponding to Figure 1 The electric heating method of the automobile catalyst in the embodiment of the present application also provides a computer device 500, such as Figure 5 As shown, the device includes a memory 501, a processor 502, and a computer program stored in the memory 501 and executable on the processor 502, wherein the processor 502 implements the electric heating method of the automobile catalyst when executing the computer program.

[0110] Specifically, the above-mentioned memory 501 and processor 502 can be general-purpose memories and processors, which are not specifically limited here. When the processor 502 runs the computer program stored in the memory 501, it can execute the above-mentioned electric heating method of the automobile catalyst, solving the problem in the prior art that the traditional electric heating automobile catalyst will cause a long delay time in engine start-up and waste fuel consumption.

[0111] Corresponding to Figure 1 The electric heating method for the automobile catalyst in the embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it executes the steps of the above-mentioned electric heating method for the automobile catalyst.

[0112] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc. When the computer program on the storage medium is run, it can execute the above-mentioned electric heating method of the automobile catalyst, solving the problem in the prior art that the traditional electric heating automobile catalyst will cause a long delay time for engine start-up and waste fuel consumption.

[0113] In order to determine the start time of electrically heating the automotive catalyst, the computer-readable storage medium first needs to estimate the time required for electrically heating the automotive catalyst and the time until the engine is started at a predetermined interval. To avoid the problem of delayed engine start timing caused by the electrically heated catalyst, after obtaining the estimated time required for electrically heating the automotive catalyst and the time until the engine is started, it is necessary to determine whether the time until the engine is started is less than the time required for electrically heating the automotive catalyst. If the time until the engine is started is less than the time required for electrically heating the catalyst, electrically heating the automotive catalyst is started. The method of use provided by the computer-readable storage medium described in the present application immediately starts the electrically heated automotive catalyst when it is determined that the time until the engine is started is less than the time required for electrically heating the automotive catalyst, so that the electrically heated automotive catalyst has been preheated in advance by the time the engine is started, and no temporary preheating is required when the engine is started. This solves the problem of traditional electrically heated automotive catalysts causing a long delay in engine start time, improves engine starting efficiency, and saves fuel consumption.

[0114] In the embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interface, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0115] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0116] In addition, each functional unit in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0117] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0118] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and are not to be understood as indicating or implying relative importance.

[0119] It should be noted that the term "comprising" used in the embodiments of the present application is used to indicate the existence of the features declared thereafter, but does not exclude the addition of other features.

[0120] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein are for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0121] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. However, these modifications, changes, or replacements do not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application. They should all be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. A method for electrically heating an automobile catalyst, characterized in that: The following steps are involved: Estimate the time required for electric heating of the car's catalytic converter and the time until the engine starts according to the preset time interval; Determining whether the time from the engine start to the engine start is less than the time required for electric heating of the automobile catalytic converter; If the time from the engine start to the engine start is less than the time required for the catalyst to be electrically heated, then electrically heating the automobile catalyst is started; The estimating the time required for electric heating of the automobile catalyst according to the preset time interval includes: Obtain the current vehicle catalyst temperature and ambient temperature according to preset time intervals; estimating the time required for electrical heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature and the target temperature; The estimating the time until the engine starts according to the preset time interval includes: Obtain the current vehicle battery remaining capacity SOC and power battery discharge average power according to the preset time interval; estimating the time until the engine starts based on the current remaining charge SOC of the vehicle battery and the average discharge power of the power battery; The estimating the time until the engine starts according to the current remaining capacity SOC of the vehicle battery and the average discharge power of the power battery includes: Calculating the difference between the current remaining capacity SOC of the vehicle battery and the SOC critical value to obtain the SOC from the start time; The time until the engine starts is estimated by calculating the product of the SOC and the battery pack energy at the start time and dividing it by the average discharge power of the power battery.

2. The electric heating method for an automobile catalyst according to claim 1, characterized in that: The estimating the time required for electric heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature and the target temperature includes: Searching for the time corresponding to the current vehicle catalyst temperature, ambient temperature, and target temperature through a preset mapping table; The found time is determined as the time required for electrical heating of the catalyst.

3. The electric heating method for an automobile catalyst according to claim 1, characterized in that: The estimating the time required for electric heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature and the target temperature includes: Determining an input feature vector based on the current automobile catalyst temperature, the ambient temperature, the target temperature, a heating rate of the automobile catalyst, and a heat dissipation rate of the automobile catalyst; The input feature vector is input into a vehicle catalyst heating time prediction model to estimate the time required for the vehicle catalyst to be electrically heated.

4. An electric heating device for an automobile catalyst, characterized in that: include: A calculation module, for estimating the time required for electric heating of the automobile catalyst and the time until the engine is started according to a preset time interval; The estimating, according to preset time intervals, the time required for electric heating of the vehicle catalyst includes: obtaining, according to preset time intervals, the current vehicle catalyst temperature and the ambient temperature; estimating the time required for electric heating of the vehicle catalyst based on the current vehicle catalyst temperature, the ambient temperature, and the target temperature; the estimating, according to preset time intervals, the time until engine start-up includes: obtaining, according to preset time intervals, the current vehicle battery remaining capacity (SOC) and the average power discharge power of the power battery; estimating the time until engine start-up based on the current vehicle battery remaining capacity (SOC) and the average power discharge power of the power battery; the estimating, according to the current vehicle battery remaining capacity (SOC) and the average power discharge power of the power battery, including: calculating the difference between the current vehicle battery remaining capacity (SOC) and a critical SOC value to obtain the SOC from the start-up time; and estimating the time until engine start-up by dividing the product of the SOC from the start-up time and the battery pack energy by the average power discharge power of the power battery; A comparison module, configured to determine whether the time from the engine start to the engine start is less than the time required for the electric heating of the automobile catalyst; The processing module is configured to start electrically heating the automobile catalyst if the time from the engine starting is less than the time required for electrically heating the catalyst.

5. The electric heating device for automobile catalyst according to claim 4, characterized in that: The computing module includes: The first acquisition unit is used to acquire the current automobile catalyst temperature and ambient temperature according to a preset time interval; The first calculation unit is used to estimate the time required for electrical heating of the automobile catalyst according to the current automobile catalyst temperature, the ambient temperature and the target temperature.

6. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 3 are implemented.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are executed.

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